Fillet knife



FIG. 1 is a perspective view of a fillet knife embodying our new design.

FIG. 2 is a top plan view thereof;

FIG. 3 is a side view in elevation thereof;

FIG. 4 is an end elevational view thereof from the right of FIG. 3;

FIG. 5 is a bottom plan view thereof.

FIG. 6 is a side view in elevation showing the opposite side from that of FIG. 3; and

FIG. 7 is an and elevational view thereof, from the right of FIG. 6. 

The ornamental design for a fillet knife, as shown and described. 